Drier.



1101848362. v v PATENTED MAR.'26,1907.

0. B. "GEIGER.

DRIER. v

APPLIOAPTION FILED NOV. 8, 1906.

Lil

of the material to be treated. The

' UNITED STATES PATENT OFFICE.

(llAltLliS li. Uliltilllt, ()F L01. ISYILLE, KENTUCKY, ASSIGNOR OFONE-THIRD TO HIMSELF,

()Xltl-Tllllil) 'IO WILLIAM IiOOP,

AND ONE-THIRD TO G.

WALTER FI-Slibl, OI LOUISVILLE, IQISXTUCKY.

DRIER.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed November 8,1906. Serial No. 342.447.

ville, in the county of Jefferson and State of Kentucky, have inventednew and useful Improvements in Driers, of which the following is aspecification, reference being had to the accompanying drawings, forminga. part thereof.

i This invention relates to driers of the class employing as adrying-chamber an approximately horizontal cylinder rotating about itsaxis and receiving at one end the material to be dried and dischargingthe dried material from the other end, and it is shown applied to such adrier in which the heating element is steam introduced into the pipeswith which the rotary cylinder is furnished.

The particular improvements constituting this invention consist inlocating the means for feeding in the material to be dried in positionwhere it is adapted also to convey back into the drier the line solidmaterial which is sometimes carried up with the escaping vapors and inmeans for providing for the difference in expansion of the inner andouter sets of steam-tubes.

It consists also in the specific features of construction for thepurpose indicated, which may be understood from the description, and areset out in the claims.

In the drawings, Figure 1 is an axial section of a drier embodying theimprovements constituting this invention. Fig. 2 is a section at theline 2 2 on Fig. 1 Fig. 3 is a section at the line 3 3 on Fig. 1 fromone side to. the diametric linen: w on said Fig. 3 and at the line 4 4on said Fig. 1 from said diametric line to the other side.

The cylinder 1 has at the receiving end a head consisting of a manifoldor chambered plate 2 3, said head consisting of two parts, an outerannular part 2 and a central part 3, the central part being centeredwithin the annular part by four radial spokes or arms 3, which seat,respectively, upon the four inwardly-projecting convolutions 2 of saidannular element, as seen in Fig. 2. The two elements when assembledtogether in operative position constitute an apertured head for saidcylinder, the four apertures 1- constitu ting the means of access intothe cylinder cone-frusturn 5, attached to the outer side of the annularelement 2 ofthe head completely encompassing all the apertures, 1*, sothat they open from the cylinder only into said conefrustum, constitutesa vestibule or gathering mouth for the receiving end of the cylinder. Atthe opposite end the cylinder-head consists of a manifold 6, somewhatsimilar in form to the manifold 2 3, but made unitar instead of in twosections. The shell or cy inder 1 is secured directly to a flange 2 ofthe manifold at the receiving end. At the opposite end said shell issecured to a flange 7 a of a ring 7, which encompasses the manifold 6,the latter fitting within free to move longitudinally therein for ashort distance to accommodate the difference in expansion andcontraction between the shell 1 and the steam-pipes 8, which connectsaid manifold 6 with the outer element 2 of the opposite manifold. Tothe ring 7 there is secured a cylindrical extension 9, which constitutesthe discharge-111011 th of the entire rotating element of the drier. Theannular element 2 of the receiving manifold and the ring 7 at theopposite end ail'ord means by which the entire rotating element of thedrier said ring so as to be is lodged upon its supporting-rollers 10 10,

. tate said pinion.

At the receiving end there is a feed-chamber 14, mounted in fixedposition and terminating in a cylindrical flange 17, which is concentricwith the mouth of the cone-frustum 5, into which said flange protrudes,so that material may be delivered from said chamber 14into thecone-frustum, and thereby into the rotating cylinder 1. For feeding thematerial through the feed-chamber 14 and into the cone-frustum a spiralconveyer 15 is located at the bottom of said chamber 14, having itsshaft protruding through and suitably journaled in the outer end of thechamber and having a further bearing in a bracket 18 offset into thecone-frustum from the opposite end of the chamber, said entire end ofthe chamber which protrudes into the cone-frustum being open. 19 is achute through which the material is delivered into the top of thefeed-chamber.

' 20 is a vapor-pipe leading off from the upper side of the feed-chamberbetween thechute 19 and the eone-frustum 5.

21 is a partition which depends from the 1 top of the feed-chamberbetween the chute 19 and the vapor-pipe 20, extending down substantiallyto the top of the spiral conveyer, and thereby partitioning the portionof the space into which the material is delivered from the chute 19 fromthe portion by which the vapor passes out of the cylinder and isdischarged. In the vapor-pipe 20, between its connection with thechamber 14 and its upper discharge end, there .is located an expandedchamber 22 in which light particles of solid matter carried up by thevapors, losing somewhat of their momentum as the vapors expand in saidchamber, are precipitated back into the chamber 14. The location of theconveyer 15 at the bottom of said feed-chamber 14 and the connection ofthe vaporsdischarge pipe 20, as shown, from said feed-chamber 14facilitates the recovery of the solid matter thus precipitatedand avoidsclogging of the passages therewith, 'because it falls, as indicated,directly upon the screw conveyer and is carried back into the cylin derwith the incoming new material.

In order to afford sufficient heating surface and to distribute it tothe best advantage for the purposes of the drier, it will be observedthat the steam-pipes consistof two distinct systems, one an annularsystem, which connects the annular element 2 of the left-hand manifoldwith. the opposite manifold, and

- the other a central system, which connects the inner element 3 of saidleft-hand manifold.

with the opposite manifold. It is observedin practice that the expansionand contraction of these two systems of pipes isliable to be diflerent,and this difference of expansion is accommodated by making the left-handmanifold, as described, in two parts connected with said two systems ofpipes, res ectively. No mechanical connection or attac ment of the twoparts to each other is necessary for any purpose, the inner part beingmerely f material.

manner, being poured toward the center,

through the ducts 24 from each of the several sectoral chambers 30,into" which the manifold isdivided by the radial partitions 25 as suchsectoral chambers respectively. approachthe upper side in the rotationof the cylinder, the water being received at the center by the sleeve26, which protrudes from the manifold out past the fixedhead 27, saidsleeve being provided with a trap-chamber 28, from which the waterescapes by way of the float-controlled valve 31 into the fixed tube 32and thence is delivered by the draincock 33. The tube 32 rotrudes fromany suitable support throug i into the trap-chamber 28, and thesteam-supply passage extends axially fixed tube 32, the pipe 38 belngscrewed into a stuffing-box 34 i through said it at the outer end and aterminal pi e 37 being screwed into it at the inner en for deliveringsteam into the center of the mani-- fold. This construction of themanifold is fully shown in my Patent No; 750,051, dated January 19. 190436 36 are caps for closing apertures in the outer 'walls of themanifolds through which the steam-pipes 8 are accessible for cleaning.-

1. A steam-drier comprising an.apfproximately horizontal cylindermounted or rotation about its axis, having its head consi'sting ofchambered manifolds; steamipes' connecting said manifolds, the lattereing apertured between the groups of steam.

pipes for entrance anddischarge of the. ma-

terial to be treated; a cone-frustum atthe receivin end secured at theouter side of the manifol encom assing all said apertures for gatheringand irecting material to the latter; a fixed feed-chamber having aterminal conaxial with the cylinder and protruding into the cone-frustuma conveyer at the bottom of said chamber and a vapor-discharge pipeleading from the top of the chamber.

2. A steam-drier comprising a horizontal rotai'y cylinder havingapertured heads for receiving and delivering the materialfto be treated;a'.ei rcular vestibule-piece at. the ,outer sideof the receiving-headencompassing all'the apertures therethrough; a fixed chamber having aterminalmouth conaxial with the .cylinder and protrudingintonthevestibule-piece, said chamber having apartition extending from the upperside downward toward the bottom; a conveyer in the bottom of saidchamber extending past the lower edge of said partition; a vapor-escapepipe leading from the top' of said chamber etween the partition andthecylinder, and a connection forgsupplying material tobe treated above theconveyer at the outer side of said-partition.

.3. A steam-drier comprising a cylinder I having its heads hollow forsteam-chambers;

longitudinally-extending pipes within the.

cylinder connecting the corresponding chambers of theopposite heads,such pipes being i distributed in an inner group and an outer group, oneof the heads being formed in two sections seating one within the otherwith freedom of relativemovement axially with respect to the cylinder,the two groups of pipe being connected to said two sectionsrespectively. v I

4. A steam-drier consisting of a cylinder 5 having chambered heads;steam-pipes connecting the two heads distributed-in two groups, onewithin the other, the shell inclosing all the steam-pipes havingan'extension at one end' Within which the head at LO that end seats withfreedom of movement longitudinally with respect to the cylinder,

the head at the other end consisting of an annular and a centralsection, the two groupsof pipes being connected with said" .two sectionsrespectively, the outer or annu- 15 lar section being joined rigidly tothe shell, and the inner section being free to move relatively to theouter longitudinally of the, cylinder.-

In testimony' whereof I have hereunto set 20 my hand, at Louisville,Kentugky, this 30th I day of October, 1906. I f

. CHARLES E. GEIGER.

Witnesses:

C. A. FISKE; Jr., M. VAN DYKE.

